Each week choose a chapter from each subject. Gather all past exam questions from that chapter and practise them throughout the week. Once you've reached the end of the week, you would have practised all the questions for that chapter, and now move onto the next chapter for the next week.

Write a year checklist. All of the events of the year should be in it. For example mine has "FRENCH ORAL PREPARATION" for when I need to prepare my oral for French. Same thing with Spanish. Once I have it prepared and ready for all the questions that I'll be asked, I'm going to stick it in a folder, practise it whenever I get the time, cross it over on the checklist, and that's that done.

Do that for all subjects. Checklists are the best way to stay organised.

Get a folder, and call it "The Leaving Cert in a Nutshell". In this folder use poly pockets to store all different useful notes for each subject. Separate the subjects into different sections in the folder and whenever you have a free class, or get the time, you'll have that folder on demand to study. This way you won't be wasting your time and you'll be much more organised.

Finally, do your homework. Ontop of revision, homework comes first. You may not believe it but in 6th year you learn 85% of the leaving cert. In 5th year it's an introduction. So do your homework in 6th year.